Help with indicator led on dashboard

Hello guys need some help, after driving around today,  I noticed that the green indicator flashing led on the dashboard doesn't always illuminate when i engage the indicators and is intermittent, but I can hear clicking of the indicators in the fuse box, my question is what could be causing the illuminating green flashing led on the dashboard to only work intermittently, and is there anything I can check, all help is greatly appreciated in advance